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3 years ago

I need help with this

Mathematics

1 answer:

Trava [24]3 years ago

4 0

Answer:

https://www.mathpapa.com/algebra-calculator.html

Step-by-step explanation:

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SOMEONE PLEASE HELP ME! I promise i will mark brainlest, but i need the right answer for this. help is much appreciated <3.

Tresset [83]

Answer:

choice C

Step-by-step explanation:

the same input has 4 different outputs so its wrong

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3 years ago

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Alisiya [41]

Answer:

Step-by-step explanation:

$-c\leq21\qquad\text{change the signs (flip the inequality sign)}\\\\c\geq-21$

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3 years ago

Janine is analyzing spending habits of students in her high school. She finds a mean monthly discretionary expense of $70 spent

aliina [53]

Answer:

Variance = 25

Step-by-step explanation:

<em>Standard deviation is the under root of variance.</em>

<em>Variance is the square of standard deviation.</em>

Mean = 70

Variance = ?

Standard deviation = √variance = 5

Variance = 5²

Variance = 25.

Therefore, the variance is 25.

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4 years ago

I WILL GIVE YOU BRAINLIEST IF YOU ANSWER THE WHOLE QUESTION.

kicyunya [14]

Answer:

B) $y=2x$ and C) $y=-7x+9$

Step-by-step explanation:

Once a linear function has a constant rate of change, you just have to find the linear functions. Also, the other ones are quadratic functions, and their graph are parabolas, which don't have a constant rate of change.

Considering $f(x)=y$

$f(x) = 2x$ has a constant positive rate of slope 2.

$\frac{dy}{dx}=2$

$f(x)=-7x+9$ has a constant negative rate of slope -7

$\frac{dy}{dx}=-7$

5 0

3 years ago

Point C is on line segment \overline{BD} BD . Given BC=x+4,BC=x+4, CD=5x,CD=5x, and BD=5x+7,BD=5x+7, determine the numerical len

aleksandrvk [35]

Answer:

$CD = 15$

Step-by-step explanation:

Given

$BC = x + 4$

$CD = 5x$

$BD = 5x + 7$

Required

Determine CD

Since Point C is on segment BD, then we have

$BD = BC + CD$

Substitute x + 4 for BC; 5x for CD and 5x + 7 for BD

$5x + 7 = x + 4 + 5x$

Collect Like Terms

$5x - 5x - x = 4 - 7$

$- x = -3$

Multiply both sides by -1

$x = 3$

Substitute 3 for x in $CD = 5x$

$CD = 5(3)$

$CD = 15$

<em>Hence, the length of CD is 15 units</em>

6 0

3 years ago

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